Daniel 10:18-21
10:18 Then the one who appeared to be a human being touched me again and strengthened me.
10:19 He said to me, “Don’t be afraid, you who are valued. Peace be to you! Be strong! Be really strong!” When he spoke to me, I was strengthened. I said, “Sir, you may speak now, for you have given me strength.”
10:20 He said, “Do you know why I have come to you? Now I am about to return to engage in battle with the prince of Persia. When I go, the prince of Greece is coming.
10:21 However, I will first tell you what is written in a dependable book. (There is no one who strengthens me against these princes, except Michael your prince.